Gutter-head



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J. H. MORRISON & E. ALLEN.

, CUTTER HEAD. 4 No. 293,494. Patented Feb. 12,1884.

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SPECIFICATION forming part of Letters Patent No. 293,494, dated February 12, 1884, V Application filed June 1,1833. (No modeh I I Be it known that we, J. HENRY lVIORRISON and EDWIN ALLEN, both of the city of Norwich, county of NewLondon, and State of Con necticut, have invented certain new and useful Improvements in Cutter-Heads, which imin the following specification, reference being had to the accompanying drawings.

Our improvements relate to that class of cutter-heads in which,bya peculiar combination and arrangement of cutting-edges properly adj ustedaround a common center, one is enabled to turn irregular forms with great rapidity and accuracy.

Our immediate object is to produce a cut tor-head which shall be strong in its parts, simple in construction, easily sharpened and balanced, and the parts of which may be quickly and cheaply duplicated and adjusted ifbroken, lost or worn out, a cutter-head which in its entirety shall be capable of turning with the utmost nicety spools or analogous articles of wood which require one or more diameters and regular or irregular profiles.

Our improved form of cutter is intended solely for wood turning and finishing, and is specially adapted for use in that class of lathes or machines in which the cutters revolve at a highrate of speed, the wood to be formed or turned being properly secured "and rotated one or more turns against the cutters by any suitable mechanism.

The accompanying drawings represent our new form of cutter-head constructed for turn ing spools as commonly used for thread.

In the several figures like letters indicate like parts.

Figure 1 is an end View of our cutter-head, showing the several forms of cutters in their respective places properly adjusted, and also shows the method of securing each rigidly in place. Fig. 2-is a side or edgewise view of parts of our device, showing the blank or form to which the several cutters are secured. Fig. 3 is an end View of the blank before referred to, showing the cuttersfor forming the barrel rim-cutter, showing also the provision for ad- 1 justing the same. i Fig. 5 is a detached View of one of our barrel-cutters.

Our cutter-head is constructed, preferably, in three principal removable sections, A, A, and B, as shown in Fig. 2, these three parts being adapted to receive and support the other and smaller parts. WVe do not, however, confine ourselves to said sectional form, but may,

ifso desired, construct the blank B and side pieces, A A, of a single piece of steel. When constructed in sections, as in Fig. 2, we are enabled to use for the blank B cast metal or i any other suitable material, and as the said blank is'not subject to any wear it may be supplied with a new set of cutters, when needed, and used for an indefinite length of time.

The blank B is constructed with a central hole to receive the arbor or mandrel on or with which it rotates, its outer surface or edge being flattened on two or more sides to IGCBlXG the cutters which form the barrel of the spool. Fig. 3 shows said blank flattened on four side s, and having the barrel-cutters O in proper position. V

The cutter C (see Fig. 5) is constructed of flattened steel with a beveled cutting-edge, and slotted at its rear end to allow for proper adjustment. Each of the cutters O is secured to the blank B by one or more setscrews, e.

The side cutters in ounclevice. are two in, number, A A, constructed of steel and fastened to the blank B, one on each side. These pieces A A 'areprovided with holes centrally located and corresponding with the arbor-hole "in blank B. The outer edge of A A is provided with obliquely-cut transverse cutting edges or teeth beveled to produce the angle shown at h in the spool outlined in Fig. 2. These teeth or cuttingedges on A A are not, however, continuous, but are broken at two or moreequidistant points to receive the rimcutters E, and also to allow the chips or dust to find a convenient exit in the act of cutting or turning. The office of the rim-cutters E is to form the outer edges-or rims of the spool, and in order to locate them the proper distance from the side of the blank B we interpose between them and B washers 7c, of suitable thickness to accomplish the desired result. The cutter E, with its individual washer,

is secured to B by a set-screw, a. It (E) is also provided with a slot, 0, to allow for proper adjustment. This slot is an important feature of our invention, as without it it would be impossible to bring the cutting-edge of E to its proper position relative to the several other cutters after the cutter E had been once removed and sharpened.

As our device is intended to revolve at a high rate of speed, it is essential that it be carefully balanced, not only to avoid all vibration and jar of machinery, but also to allow each individual cutter to perform its share of the work.

Inasmuch as our several cutters are secured to the blank B by screws at various points near its outer edge, we find it very convenient to make use of small metal washers placed under the heads of one or more screws, (see the purpose specified.

I J. HENRY MORRISON.

EDWIN ALLEN.

\Vitnesses:

FRANK H. ALL N, AMos A. BROWNING.

secured to the blank B, as described, and for v 

